Crossover: Transmigrating into Gundam SEED as the Naruto Founding Team

New blurb: The first part focuses mainly on Gundam! The middle part focuses mainly on Naruto, and in the later part the two storylines run side by side. Suppose the Naruto world and the Gundam SEED world were separated by several thousand, or perhaps even tens of thousands, of years, yet there were space-time tunnels connecting them. What would happen if people from the two worlds could travel back and forth? This story focuses on the founding-era characters from Naruto in the world of Gundam SEED. Part 1 - Focusing on the SEED timeline Part 2 - Events in the Naruto world (the founding era) Part 3 - The past and future unfold in parallel Spoilers and warnings: Tobirama is gender-swapped, and the pairing is Izuna! The younger-brother group is older than the older-brother group~ (Part 1) Also, I played around with a bloodline trope~ What if the birth mother of Hashirama, Tobirama, Kawarama, and Itama were a Coordinator who accidentally fell into the Naruto world, then mysteriously disappeared one day (returning to the Gundam world)? What would happen? 2333